Dental appliance



Dec. 17, 1940. N. G. KAYE 2,224,967

DENTAL APPLIANCE Filed March 1o,` 193e ATTORNEYS Patented Dec. 17, 1940uiten j stares parmi' trice 2 Claims.

This invention relates to a dental appliance and refers moreparticularly toa device for measuring, mixing, ejecting oi impressionmaterial.

An object oi the present invention is the provision of an instrument`which can be used for mixing and ejecting a material used in dentistryfor male-ing impressions, `said instrument being inexpensive inconstruction and simple and reliable in operation'.

Other objects o f this invention will be apparent in the course of thefollowing specification.

The invention will appear more clearly from the following detaileddescription when taken in connection with the accompanying drawingshowing by way of example a preferred embodiment oi the inventive idea.

In the drawing:

Figure 1 is a section through the syringe, some parts being shown in aside elevation.

Figure 2 shows a portion of the syringe when it is ready for mixing.

- Figure 3 shows a nozzle in section; f

Figure 4 shows a nozzle ci a `somewhat different type; and f Figure 5 isa section along `the line Iiii5 of Figure 4.

The syringe 2li shown in Figures 1 and 2 of the drawing comprises anouter casing Si! having two broad slots through which the inner glasscylinder 8| is exposed. As shown in Figure l., the glass container orcylinder 2| is provided with the indicia 812 showing the amount of thematerial contained in the cylinder, and serving for proportioning thematerial. y

The casing 8B is screwed upon a threaded portion of an upper lange $3,the inner surface oi which carries a washer @di used for supporting oneend o1 the glass cylinder di. A lower flange 85 is Aprovided with anouter threaded portion which measures with screw threads provided uponthe inner lower surface of the cylinder di). flange 35 is also providedwith an inner threaded portion which is used for holding acorrespondingly shaped lower portion it@ oi the glass cylinder 8l.

The cover 8'? is connected by a hinge 38 and a lock il@ with the upperflange 83. The cover 8l is provided with a narrow horizontal bore holewithin which a spring 93 is situated, which may be compressed by a setscrew 9E. A bali 92 is in engagement with the spring 9i) and fits withina recess formed a plunger which is connected by the bolts @d with a hardrubber head g5.

In the position shown of Figure 1 a stirrer S6, having the form of anarrow blade, is situated The within a correspondingly shaped recessEil, which is provided in lthe rubber head 95. The stirrer 96 is carriedby a ro-d 98 which passes through another opening formedin the rubberhead 95 and the plungerES. .The upper end of the rod 98 carries the head39, a threaded portion Ill and a square end portion II. The upperportion of the plunger 93 is provided with inner screw threads The lowerVend of the container 8| is provided with an opening |93 which is inalignment with a corresponding opening or passage iM provided in thebottom closure member HB5, which is connested by the hinge Iili and thelock Nil with the flange 85. The bottom member |85 carries a pet cockIill having an opening lll@ and used .for interrupting and controllingthe passage of the mixture through the channel or passage |64. The lowerend of the closure member H35 is provided with screw threads H0.-

As already mentioned, the syringe 24 may be used for the purpose ofejecting lthe casting material and may also be used as a mixer for thatmaterial... Figure ls'hows the syringe when it is ready for ejection,while Figure 2 shows it while it is being used` as amixer.

When the syringe is used for ejection, the plunger handle |I| is placedover the upper end of the rod 93, the threaded lower portion ||2 of thehandle |I| being screwed upon the threaded portion |2 of the plunger 93.The upper threaded portion I3 is threaded upon the screw threads Idilcarried'by the rod 98.

Nozzles of different forms may be affixed one after the other Ito thesyringe 2li to suit individual requirements.

Figure 1 shows a short nozzle H4 which is connected with a syringe by aclosure member ||5 screwed upon the screw threads I IG of the bottomportion |95 and supported by the rubber Washer Figure 3 shows a nozzleII'I having two V- shaped end portions IIB and IIS.

Figures 4 and 5 show a nozzle |29 provided with avery narrow elongatedpassage I2 I.

Figure 2 shows the device when it is ready to be used as a mixer. Inthat case, the handle II I is removed and a cover |22 is placed over theupper end of the rod 98 in such manner that the rectangular end lill ntsinto a square recess |23 formed in the cover |22. The cover |22 isprovided with a handle |24 which is iirrnly attached thereto.

As shown in Figure 1, the syringe 24 may be conveniently supported upona stand |25 which has an annular portion |26 supporting the bottommember |05 and enclosing the closure member H5. Legs |21 are firmlyconnected with the annular support |26 by the bolts |28.

The impression material may be introduced into the interior of the glasscontainer 8|, either by suction or upon opening the cover 81.

Then the mixing of the material situated within the container 8| takesplace. For that purpose the syringe 24 is placed upon the support |25and the plunger handle is unscrewed and removed from the syringe. Thenthe cover |22 is placed over the upper portion of the rod 98 in suchmanner that its inner square recess |23 ts over the square end |0| ofthe rod 98. The casing |22 is moved downwardly until it rests upon theshoulder |29 of the cover 81. The rod 98 is thereby also moveddownwardly until its end portion 99 ts into a recess |30 provided in theplunger 93. Then the operator may rotate the handle I 24, and the covermember |22 and the rod 98 will be rotated along with it. 'Ihe blade 96which is now situated substantially in the middle of the glass container8|, will rotate along with its rod 98 and will thoroughly mix thematerial situated within the glass container 8|.

When the impression material has been suiciently mixed the cover |22 isremoved, the mixing blade 96 is returned to its position in the recess91 and then the handle is screwed again upon the plunger 93 and thethreaded portion |09 of the rod 98.

All the parts of the described device may be conveniently cleanedsterilized and are easily replaceable.

It is apparent that the specic illustrations shown have been given byway of illustration and not by way of limitation, and that thestructures above described are subject to wide variations andmodications without departing from the scope of the invention. Forexample, this device may be used not only in connection with dentaltreatments, but also in sculpture, or in any other art in which castingsor impressions are required. All of such variations and modificationsare to be included Within the scope of the present invention.

What is claimed is:

1. A device for mixing and ejecting a material, said device comprising acontainer, an opening formed in said container, a lower 'flangeenclosing a portion of said container, a bottom member connected withsaid lower flange and having a passage formed therein which is inalinement with said opening, a valve carried by said bottom member foropening and closing said passage, said bottom member having a threadedportion, a nozzle having a passage formed therein and communicating withthe first-mentioned passage, a nozzle support carrying said nozzle andengaging said threaded portion, an upper ilange enclosing anotherportion of said container, a cover connected with said upper ilange, aplunger head movable within said container, a plunger connected withsaid plunger head and extending through an opening formed in said cover,releasable means carried by said cover for maintaining said plunger in apredetermined position, said plunger having a threaded portion, and ahandle screwed upon the threaded portion of said plunger.

2. A device for mixing and ejecting a material, said device comprising acontainer, an upper ange enclosing a portion of said container, a coverconnected with said upper flange, a plunger head movable within saidcontainer, a plunger connected with said plunger head and extendingthrough an opening formed in said cover, releasable means carried bysaid cover for maintaining said plunger in a predetermined position, amixing blade movable within said container and fitting into a recessformed in said plunger head, a movable rod having one end connected tosaid mixing blade and extending through openings formed in said plungerhead and said plunger, an angular end portion carried by the other endof said rod, and a handle detachably and movably mounted upon said coverand having an angular inner recess, said angular end portion fittinginto said recess.

NATHAN G. KAYE.

